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Geometry H
Mrs. Diaz
NAME:______________________________________
DATE:______________________________________
UNIT 7
ASSIGNMENT #3
Introduction to Polygons and Interior Angle Sum
OBJECTVE: S.W.B.A.T. find the measurement of each interior angle of a REGULAR polygon
DIRECTIONS: Use what you know about interior angles to find the value of x.
The Polygon Angle-Sum Theorems
Use a word from the list below to complete each sentence.
concave
equilateral polygon
regular polygon
regular polygon
convex
exterior angle
equiangular polygon
interior angle
1. A polygon that has an interior angle greater than 180° is a __________ polygon.
2. A polygon that has no interior angles greater than 180° is a ___________ polygon.
3. A hexagon in which all angles measure 120° is an example of an ________ .
4. An octagon in which all angles measure 135° and all sides are 6 cm long is an example
of a _______________ .
5. An angle inside a polygon is an __________
GROUP PRACTICE
DIRECTIONS: Use the rule you found with your group, to find the interior angles of the given polygons
1. A quadrilateral
_____________________________
2. A pentagon
_____________________________
3. An octagon
_____________________________
4. A polygon with 11 sides
_____________________________
5. A polygon with 15 sides
_____________________________